Studies on productivity, nutrient uptake and economics of wet season rice under IPNS in rice-based fodder cropping systems Roy D.P., Barik A.K., De G.C. Palli Siksha Bhavana (Institute of Agriculture), Visva-Bharati, Sriniketan-731 236, West Bengal, India Abstract Productivity, nutrient uptake and economics of wet season rice under IPNS (Integrated plant nutrient supply system) in rice-based fodder cropping systems were studied during 2002 and 2003 in red lateritic soil. Pooled data over two years revealed that various yield attributes, yield and NPK uptake of rice significantly increased when rice was succeeded by berseem in rice-berseem sequence. Application of 50% recommended dose (RD) of NPK (RD= 60-30-30 kg ha-1 of N-P2O5-K2O) + dhaincha @ 10 t ha-1 produced significantly higher yield attributes, yield and NPK uptake of rice among different nutrient management practices. This treatment produced the highest grain yield (4.495t ha-1) over 100% RD of NPK (4.201 t ha-1) and 50% RD of NPK +FYM @ 10 t ha-1 (4.122 t ha-1). Rice-berseem, sequence, along with 50% RD of NPK +dhaincha @ 10 t ha-1 in rice only provided the highest gross return (Rs. 29,915 ha-1), net return (Rs. 17,860 ha-1) and return rupee-1 invested (2.48) in comparison to rice in rice-oats, rice-fenugreek and rice-lathyrus systems. Top Keywords Wet season rice, IPNS, fodder crops, cropping systems. Top |